hold iy in the upper head and near the tail
no fish live in it
yes. fish can hold their breath for a long period of time.
No, you should not be putting material in with fish.
it depends. for most fish it should be pH7-pH8 but some species like it at pH6
with their fins, they can only live in water the only way to live in water is if they can hold their breath or if they have gills
there is really no difference between how long cold water and warm water fish live. It all depends on the size of the fish. If you have a 1-3 inch fish it should live for 2-3 years. If you have a 4-7 inch fish it should live for 4-6 years. If you have a 7-10 inch fish it should live for 7-11 years and finally if you have a 10-15 inch fish it should live for 12-17 years. But dont forget that fish get sick. so if you have an 8 inch fish and it lives for only 1 year it either got sick or you didn't provide proper care for it.
Bettas are. Goldfish really should have an aquarium if you want them to live.
Assuming you are talking about comet goldfish, the fish should live for a few decades under proper care.
Floran fish can not live with many other types of fish. They are highly aggressive and should be kept in species-specific tanks with their own kind.
Zebra Danios should live in a shoal of at least 6 fish, they are tropical (warm water), and should be fed tropical fish foods
So long as you've thoroughly cleaned the tank between occupants, there should be no problem.
They are tropical fish and should not go below 65F for any length of time.